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Fabrication of an IR hollow-core Bragg fiber based on chalcogenide glass extrusion

Abstract : The theoretical analysis and experimental preparation of a hollow-core Bragg fiber based on chalcogenide glasses are demonstrated. The fiber has potential applications in bio-sensing and IR energy transmission. Two chalcogenide glasses with, respectively, high and low refractive indexes are investigated in detail for the fabrication of hollow-core Bragg fibers. The most appropriate structure is selected; this structure is composed of four concentric rings and a center air hole . Its band gap for the Bragg fiber is analyzed by the plane wave method. The chalcogenide glasses Ge15Sb20S58.5I13 and Ge15Sb10Se75 are chosen to extrude the robust multi-material glass preform with a specialized punch and glass container. The glass preform is simultaneously protected with a polyetherimide polymer. The hollow-core Bragg fibers are finally obtained after glass preform extrusion, fiber preform fabrication, and fiber drawing. Results showed that the fiber has a transparency window from 2.5 to 14 μm, including a low-loss transmission window from 10.5 to 12 μm. The location of this low-loss transmission window matches the predicted photonic band gap in the simulation
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01165430
Contributor : Laurent Jonchère <>
Submitted on : Friday, June 19, 2015 - 9:57:19 AM
Last modification on : Friday, July 10, 2020 - 4:25:13 PM

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Minming Zhu, Xunsi Wang, Zhanghao Pan, Ci Cheng, Qingde Zhu, et al.. Fabrication of an IR hollow-core Bragg fiber based on chalcogenide glass extrusion. Applied physics. A, Materials science & processing, Springer Verlag, 2015, 119 (2), pp.455--460. ⟨10.1007/s00339-015-9017-3⟩. ⟨hal-01165430⟩

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